CVE-2026-35540

Published: Apr 03, 2026 Last Modified: Apr 03, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,4
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none

Description

AI Translation Available

An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts.

669

Incorrect Resource Transfer Between Spheres

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity
Potential Impacts:
Read Application Data Modify Application Data Unexpected State
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/roundcube/roundcubemail/commit/27ec6cc9c…
https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76…
https://github.com/roundcube/roundcubemail/commit/579b68eff…
https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd6…
https://github.com/roundcube/roundcubemail/releases/tag/1.6…
https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
https://github.com/roundcube/roundcubemail/releases/tag/1.7…
https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
https://roundcube.net/news/2026/03/18/security-updates-1.7-…
https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14